摘要:

AbstractThe 5145 Å laser line was used to excite gaseous bromine in order to observe the resonance Raman effect. In the Stokes side, strong resonance fluorescence overwhelm, therefore the resonance Raman scattering could not be detected. However, in the anti‐Stokes side, four resonance Raman peaks were observed. The corresponding transitions are Δν= −1 to −4. The resonance Raman spectrum excited by the 4880 Å laser line was also presented for c

ISSN:0009-4536    

DOI:10.1002/jccs.197900001

出版商:WILEY‐VCH Verlag    

年代:1979

数据来源: WILEY

摘要:

AbstractIn earlier work we nave described and partially characterized two histone kinases from regenerating rat liver and other tissues which catalyze the transfer of the γ‐phosphoryl group from ATP to histones. The histone phosphates thus formed were observed to be acid‐labile and base‐stable. In the present study we report on the specificity of one of these enzymes, namely, the kinase which is optimally active at pH 9. This enzyme appears to be relatively specific for the two histidine residues of histone H4. These histidines occur at positions 18 and 75, and both are phosphorylated. However, when regenerating rat liver was the source of enzyme, the product was 1‐phosphohistidine, whereas the enzyme from Walker‐256 carcinosarcoma catalyzed the formation of 3‐phos

ISSN:0009-4536    

DOI:10.1002/jccs.197900002

出版商:WILEY‐VCH Verlag    

年代:1979

数据来源: WILEY

摘要:

AbstractNew hydrazide derivative identified as bis‐di‐N‐acylamino acid hydrazide was synthesized from N‐acylamino acid and hydrazine under papain catalysis. The reaction was carried out at pH 5.0, 38°C in a mixture containing 0.2M Z‐X‐OH+or Boc‐X‐OH, 2% NH2NH2·H2O, 0.8% β‐mercaptoethanol, 0.1.% EDTA and 50mg/mlof papain. The bis‐hydrazide can be used in peptide

ISSN:0009-4536    

DOI:10.1002/jccs.197900003

出版商:WILEY‐VCH Verlag    

年代:1979

数据来源: WILEY

摘要:

AbstractIn the continuous investigation of structure and activity correlation of flavonoids, several 2′‐hydroxy‐2‐6(6‐methoxy‐2‐quinolyl)chromone derivatives and their intermediates 2′‐hydroxy‐2‐(6‐methoxy‐2‐quinolyl)acrylophenones were synthesized by the condensation of 6‐methoxy‐2‐quinoline aldehyde with appropriate 2‐hydroxoxy‐acetophenones in the presence of alcoholic potassium hydroxide,

ISSN:0009-4536    

DOI:10.1002/jccs.197900004

出版商:WILEY‐VCH Verlag    

年代:1979

数据来源: WILEY

摘要:

AbstractA 8% cross‐linked sulfonated polystyrene cation exchanger in the hydrogen or sodium form was used as stationary phase for the chromatography of aspirin, salicylic acid and acetic acid. The eluent is 0.02 M mineral acids or their sodium salts in aqueous ethanol. Phosphoric acid, nitric acid or sulfuric acid added in aqueous ethanol eluent made successful separation of aspirin, salicylic acid and acetic acid on hydrogen form cation exchange

ISSN:0009-4536    

DOI:10.1002/jccs.197900005

出版商:WILEY‐VCH Verlag    

年代:1979

数据来源: WILEY

摘要:

AbstractPhellamurin and amurensin were isolated from the leaves of Phellodendron wilsonii Hayata et Kanehira and it was confirmed that the latter coincided with 8‐isopentenylkaempferol‐7‐glucoside, epimedos

ISSN:0009-4536    

DOI:10.1002/jccs.197900006

出版商:WILEY‐VCH Verlag    

年代:1979

数据来源: WILEY

摘要:

AbstractChikusetsusaponin II and IVc, the minorsaponins of Panacis japonici rhizoma (rhizome of Panax japonicum C.A. MEYER) have been isolated. The structure of these saponins were established as being oleanolic acid‐(3)‐[β‐D‐glucopyranosyl (1→6)]‐β‐D‐glucuronopyranoside and 20S‐protopanaxatriol‐6‐(O‐α‐L‐rhamnopyranosyl (1→2)‐β‐D‐glucopyranoside]‐20‐O‐β‐D‐glucopyranoside.Chikusetsusaponin II is a new structure, while chikusetsusaponin IVc is identical with gi

ISSN:0009-4536    

DOI:10.1002/jccs.197900007

出版商:WILEY‐VCH Verlag    

年代:1979

数据来源: WILEY

摘要:

AbstractSome transition metal chelates of the Schiff's bases derived from salicylaldehyde ando‐anisidine,m‐anisidine andp‐anisidine have been isolated and characterized. The structures of these complexes have been discussed on the basis of their elemental analyses, conductivities, magnetic moment values, electronic and infrared spectral data.The Ni2+, Cu2+and Zn2+form ML2type compounds, UO22+and Fe3+form dimeric [UO2L2]and [Fe L2Cl]2respect

ISSN:0009-4536    

DOI:10.1002/jccs.197900008

出版商:WILEY‐VCH Verlag    

年代:1979

数据来源: WILEY